Geoffroy de Vivans, a Huguenot captain, was born in the village at the foot of the castle. Known as “The Warrior”, he safeguarded the stronghold for the devout protestant Caumont family and spread fear throughout the Périgord. That terror, along with additional fortifications protecting the castle (the bastion and the artillery tower), meant no one dared take Castelnaud, despite the intensity of the conflict in the Périgord.